A white rook is active on an open file or rank, threatening or delivering a decisive back-rank or checking move.
SAE concept sae_2592 fires when a white rook is active on an open file or rank, threatening or delivering a decisive back-rank or checking move.. It appears in 137 of 9,950 Climbchess puzzles (1.4%), spanning ELO 654–2645 (median 1478).
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This page documents A white rook is active on an open file or rank…, one of 4,505 interpretable chess concepts extracted from Leela Chess Zero via sparse autoencoders. The full feature description from our SAE labelling pipeline reads:
A white rook is active on an open file or rank, threatening or delivering a decisive back-rank or checking move.
This pattern fires in 137 of our 9,950 tagged puzzles. The puzzles where it appears span ELO 654 to 2645, with a median rating of 1478. That distribution tells you whether this is a beginner cue or a master-level subtlety.
Pattern statistics
| Concept ID | sae_2592 |
|---|---|
| Puzzles where it fires | 137 |
| Min ELO | 654 |
| Median ELO | 1478 |
| Max ELO | 2645 |
| Coverage | 1.38% of puzzle set |
Related concepts
The five concepts most often co-firing alongside this one (Jaccard similarity over the puzzle co-occurrence graph) are:
Example puzzles
Below are 10 puzzles spanning the rating distribution. Each links to its own page with full move list and related concepts.
- Puzzle 01uXH — ELO 654, themes: endgame, mate, mateIn1, side to move: White
- Puzzle zxLMx_F — ELO 786, themes: endgame, mate, mateIn2, side to move: Black
- Puzzle zawY0 — ELO 869, themes: anastasiaMate, mate, mateIn1, side to move: White
- Puzzle zzNZF — ELO 975, themes: kingsideAttack, mate, mateIn2, side to move: Black
- Puzzle zqpr5 — ELO 1167, themes: advancedPawn, advantage, defensiveMove, side to move: Black
- Puzzle zXP1P_F — ELO 1478, themes: endgame, hookMate, mate, side to move: White
- Puzzle vZBD2 — ELO 1724, themes: arabianMate, endgame, exposedKing, side to move: White
- Puzzle zxQSz_M — ELO 1885, themes: endgame, mate, mateIn2, side to move: White
- Puzzle zsjxJ_M — ELO 2111, themes: advantage, attraction, intermezzo, side to move: Black
- Puzzle rstax_F — ELO 2449, themes: discoveredAttack, discoveredCheck, endgame, side to move: Black
How to use this page
If you want to train this pattern, open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer surfaces them at the right difficulty for your current rating, and tracks how often you spot the cue versus miss it. You can also browse the related concepts above to see neighbouring ideas in feature space.
Climbchess concepts are not heuristics written by a human author. Each one corresponds to a single direction in the residual stream of Leela Chess Zero that activates on a specific board feature, then was labelled by reading the top-activating positions. This makes the catalogue exhaustive (every Leela-detectable pattern is in here somewhere) and falsifiable (you can replay our extraction).
Frequently asked
What is SAE concept sae_2592?
A white rook is active on an open file or rank, threatening or delivering a decisive back-rank or checking move. It is one of 4,505 interpretable features extracted from Leela Chess Zero's residual stream via sparse autoencoders, then labelled by reading the top-activating positions.
Where does this pattern appear?
In 137 tagged puzzles (1.4% of the set), spanning Lichess ELO 654 to 2645 with a median of 1478.
How do I train it?
Open the Climbchess trainer and filter for puzzles tagged with this concept. The trainer adapts difficulty using your live recognition profile and tracks how often you spot the cue versus miss it.
Is it free?
Yes. Climbchess is free forever, with no account, email, or signup required. You can delete your data at any time.